CN206607159U - A preheating device for mobile terminal curved glass forming - Google Patents

Abstract

The utility model discloses a fashioned preheating device of mobile terminal curved surface glass, preheating device includes the cylinder, goes up the cooling plate, on generate heat the device, send heat device and lower cooling plate, the cylinder sets up perpendicularly, goes up the cooling plate, goes up the device that generates heat, sends heat device and lower cooling plate and all places in a closed and shaping room that can take a breath, goes up the cooling plate and connects the lower extreme at the cylinder, goes up the device that generates heat and connects under last cooling plate, sends heat device and connects under on the cooling plate down. The utility model discloses a single piece plane glass blank that preheating device placed in 3D curved surface forming die evenly preheats, is convenient for be 3D curved surface glass product with single piece plane glass blank machine-shaping, has promoted curved surface glass's yields.

Description

A preheating device for mobile terminal curved glass forming

technical field

The utility model relates to the technical field of a mobile terminal 3D curved glass screen, a back cover, a protective screen and processing equipment, in particular to a preheating device for forming a mobile terminal curved glass.

Background technique

With the development of mobile terminals (smartphones, tablet computers, etc.), in addition to Samsung and LG launching smartphones with curved screens, smartphones like Apple’s use more non-flat glass with rounded edges, that is, glass The middle area is plane and the edges are transitioned by curved surfaces. The above-mentioned non-planar glasses all belong to the related and used category of the smart phone 3D curved glass of the present invention.

The existing technology is used to process curved glass products. The preheating upper heating plate that constitutes the preheating mechanism is preheated without contacting the mold, so that the heat conduction efficiency is very low, and the mold cannot be quickly raised to the required preheating temperature. After being heated to a high temperature by the forming mechanism, the formed mold is sent to the cooling line for cooling, which makes the glass with a curved surface formed by the sharp change of temperature frequently breakage, and also prolongs the overall forming time period of the curved glass .

In addition, because the processing of 3D curved glass is difficult, the process route is relatively complicated, and the forming pressure is difficult to control, the existing non-flat glass generally adopts cold processing, that is, the edge of the flat glass is ground and polished to obtain the required The arc edge; however, this cold processing method is easy to leave small cracks on the non-planar glass, which greatly reduces the yield of non-planar glass; moreover, the arc fillet size that can be processed by the cold processing method is also limited.

Therefore, the prior art still needs to be improved and developed.

Utility model content

The technical problem to be solved by the utility model is to provide a preheating device for forming a mobile terminal curved surface glass in view of the above-mentioned defects of the prior art, aiming to place a single piece of flat glass blank in a 3D curved surface forming mold through the preheating device Uniform preheating to prevent the glass blank from breaking during the pressing process, which facilitates the processing of a single flat glass blank into a 3D curved glass product, reduces the internal stress of the material during the molding process of the 3D curved glass, and reduces the generation of small cracks , improving the yield rate of curved glass.

The technical solution adopted by the utility model to solve technical problems is as follows:

A preheating device for forming curved glass for a mobile terminal, wherein the preheating device includes a cylinder, an upper cooling plate, an upper heating device, a lower heating device, and a lower cooling plate, the cylinder is vertically arranged, the upper cooling plate, the upper heating The device, the lower heating device and the lower cooling plate are all placed in a closed and ventilated molding chamber, the upper cooling plate is connected to the lower end of the cylinder, the upper heating device is connected under the upper cooling plate, and the lower heating device is connected to the lower cooling plate above.

The preheating device for forming curved glass for mobile terminals, wherein, between the upper heating device and the upper cooling plate, and between the lower heating device and the lower cooling plate, there are multiple channels for slowing down the temperature rise of the 3D curved surface forming mold. The spacers are connected.

The preheating device for forming curved glass for mobile terminals, wherein the temperature of the upper heating device and the lower heating device for heating the 3D curved surface forming mold is 650-950 degrees.

The preheating device for forming curved glass for a mobile terminal, wherein the upper heating device and the lower heating device are the same in size and rectangular in shape, and the upper and lower heating devices are arranged correspondingly.

The preheating device for forming curved glass for mobile terminals, wherein, the bottom area of the upper heating device is larger than the top area in contact with the 3D curved surface forming mold, and the top area of the lower heating device is larger than that of the 3D curved surface forming mold. The contact bottom area is used for the upper heating device and the lower heating device to completely cover the 3D curved surface forming mold for pressure holding and heating.

The preheating device for forming curved glass for mobile terminals, wherein, the output pressure of the preheating device is 4Kg-20Kg.

The preheating device for forming curved glass for a mobile terminal, wherein the molding mold for 3D curved glass includes an upper mold and a lower mold, the side of the lower mold facing the upper mold is provided with a concave cavity, and the side of the upper mold facing the lower mold A boss is provided, and the boss is adapted to the concave cavity, and is used for hot pressing the single piece of flat glass put into it into a 3D curved glass under the condition that the upper mold and the lower mold are closed. A closed hollow cavity is arranged symmetrically in the middle.

The utility model discloses a preheating device for forming curved glass of a mobile terminal. The preheating device includes a cylinder, an upper cooling plate, an upper heating device, a lower heating device and a lower cooling plate. The cylinder is arranged vertically, and the upper cooling plate, The upper heating device, the lower heating device and the lower cooling plate are all placed in a closed and ventilated molding chamber, the upper cooling plate is connected to the lower end of the cylinder, the upper heating device is connected under the upper cooling plate, and the lower heating device is connected to the lower on cooling plate. The utility model evenly preheats the monolithic flat glass blank placed in the 3D curved surface forming mold by the preheating device, which facilitates the processing and molding of the single flat glass blank into 3D curved surface glass products, and improves the yield rate of curved surface glass.

Description of drawings

Fig. 1 is a structural schematic diagram of a preheating device for forming curved glass for a mobile terminal of the present invention.

Fig. 2 is a structural schematic diagram of the preheating device for forming curved glass of the mobile terminal of the present invention on the curved glass hot pressing equipment.

Fig. 3 is a structural schematic diagram of the curved glass molding equipment (including four preheating devices) of the mobile terminal of the present invention.

detailed description

In order to make the purpose, technical solution and advantages of the utility model more clear and definite, the utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Fig. 1 , Fig. 2 and Fig. 3 , a single piece of flat glass blank is placed in a pre-made 3D curved surface forming mold 10, and a 3D curved surface glass product is formed after passing through the hot pressing equipment.

The hot-pressing equipment mainly includes the first hot-pressing module 110, the second hot-pressing module 120 and the third hot-pressing module 130 arranged in the form of an assembly line. In the direction of the arrow, it passes through the first hot-pressing module 110, the second hot-pressing module 120, and the third hot-pressing module 130 in sequence, and is used to heat-press a single piece of flat glass blank into a smart phone 3D curved glass product in stages .

Specifically, the first hot-pressing module 110 includes a main cylinder 111, a main upper cooling plate 112, a main upper heating plate 113, a main lower heating plate 114, and a main lower cooling plate 115. The main cylinder 111 is vertically arranged, and the main The upper cooling plate 112, the main upper heating plate 113, the main lower heating plate 114 and the main lower cooling plate 115 are all placed in a closed and breathable molding chamber 400, the main upper cooling plate 112 is connected to the lower end of the main cylinder 111, The main upper heating plate 113 is connected under the main upper cooling plate 112, the bottom surface of the main upper heating plate 113 is used to contact the top surface of the 3D curved surface forming mold, and the top surface of the main lower heating plate 114 is used to contact with the 3D curved surface forming mold. The bottom surface of the curved surface molding die is in contact, and the main lower heating plate 114 is connected on the main lower cooling plate 115; Same part configuration.

Preferably, a double-sided grid plate 116 is arranged between the main upper heating plate 113 and the main upper cooling plate 112, and a double-sided grid plate is arranged between the main lower heating plate 114 and the main lower cooling plate 115. 117, the two sides of the double-sided grid plates 116 and 117 are respectively processed with grid grooves, which can slow down the temperature rise rate of the 3D curved surface forming mold after assembly.

In a preferred embodiment of the utility model 3D curved glass hot-pressing equipment, the hot-pressing equipment includes: a first preheating device 210, a second preheating device 220, a third preheating device 230 and The fourth preheating device 240, the first heat-pressing module 110 is located after the fourth preheating device 240, and the 3D curved surface forming mold passes through the first preheating device 210 before passing through the first heat-pressing module 110 , the second preheating device 220 , the third preheating device 230 and the fourth preheating device 240 are used to heat the 3D curved surface forming mold in stages by means of heat conduction.

Specifically, the first preheating device 210 includes a cylinder 211, an upper cooling plate 212, an upper heating device 213, a lower heating device 214 and a lower cooling plate 215, the cylinder 211 is vertically arranged, the upper cooling plate 212, the upper heating device 213, the lower heating device 214 and the lower cooling plate 215 are also placed in the molding chamber 400, the upper cooling plate 212 is connected to the lower end of the cylinder 211, the upper heating device 213 is connected under the upper cooling plate 212, and the upper heating device 213 The bottom surface of the lower heating device 214 is used to contact the bottom surface of the 3D curved surface forming mold, and the lower heating device 214 is connected to the lower cooling plate 215; The second preheating device 220 and the third preheating device 230 all adopt the same part configuration as the first preheating device 210, and the fourth preheating device 240 adopts the same part configuration as the first hot pressing module 110, In order to slow down the temperature rise rate of the 3D curved surface forming mold, and the fourth preheating device 240 uses the air cylinder 211 to replace the main cylinder 111, so as to avoid excessive pressure on the 3D curved surface forming mold before the formal hot pressing.

The upper heating device 213 and the lower heating device 214 are the same in size, rectangular in shape, and arranged correspondingly up and down. The bottom area of the upper heating device 213 is larger than the top area in contact with the 3D curved surface forming mold, and the top area of the lower heating device 214 is larger than the bottom area in contact with the 3D curved surface forming mold, which is used for the upper heating device 213 and the lower heating device 213. The heating device 214 completely covers the 3D curved surface forming mold for pressure maintaining and heating.

Preferably, the upper heating device 213 and the upper cooling plate 212 are connected through a plurality of spacers 216, and the lower heating device 214 and the lower cooling plate 215 are connected through a plurality of spacers 217. The contact area of the spacers 216 and 217 is not as good as that of the double-sided grid plates 116 and 117. Compared with the double-sided grid plates 116 and 117 in the preheating stage, the spacers 216 and 217 can speed up the temperature rise of the 3D curved surface forming mold .

The 3D curved surface forming mold and the flat glass blank need to be uniformly preheated before pressing, and the 3D curved surface forming mold and the flat glass blank can be controlled to protect and heat by maintaining pressure. The preheating temperature of the first preheating device 210 is 650 degrees, and the output pressure is 4-15 kg; the preheating temperature of the second preheating device 220 is 750 degrees, and the output pressure is 4-15 kg; the third preheating The preheating temperature of the device 230 is 850 degrees, and the output pressure is 4-15 kg; the preheating temperature of the fourth preheating device 240 is 950 degrees, and the output pressure is 4-20 kg; the preheating temperature of the 3D curved surface forming mold is sequentially from Preheat gradually from low to high, which is conducive to the slow heating of the 3D curved surface forming mold and the flat glass blank.

The forming mold 10 of the 3D curved glass includes an upper mold and a lower mold, the lower mold is provided with a concave cavity on the side facing the upper mold, and the upper mold is provided with a boss on the side facing the lower mold, and the convex platform is adapted to the concave cavity, It is used to hot-press a single piece of flat glass into 3D curved glass when the upper mold and the lower mold are closed. A closed hollow cavity is symmetrically arranged in the middle of the bottom surface of the lower mold (specific structure of the mold) not shown in the figure).

In a preferred embodiment of the mobile terminal 3D curved glass molding method of the present invention, the molding equipment further includes: a first cooling module 310, a second cooling module 320, a third cooling module 330 and The fourth cooling module 340, the first cooling module 310 is located after the third hot-pressing module 130, and the 3D curved surface forming mold passes through the first cooling module after passing through the third hot-pressing module 130 The group 310 , the second cooling module 320 , the third cooling module 330 and the fourth cooling module 340 are used to cool the 3D curved surface forming mold in stages by means of heat conduction.

Preferably, the first cooling module 310 adopts the same part configuration as the first hot-pressing module 130, so as to ensure a stable pressure-holding effect on the 3D curved surface forming mold at the initial stage of cooling, while the second cooling The module 320 adopts the same component configuration as the fourth preheating device 240 to speed up the cooling speed of the 3D curved surface forming mold.

When the 3D curved surface forming mold passes through the first cooling module 310, it is cooled by heat transfer with the main upper cooling plate and the main lower cooling plate in the first cooling module 310;

When the 3D curved surface forming mold passes through the second cooling module 320, it is cooled by heat transfer with the auxiliary upper cooling plate and the auxiliary lower cooling plate in the second cooling module 320;

When the 3D curved surface molding die passes through the third cooling module 330 and the fourth cooling module 340, it passes through the liquid cooling plates arranged in the third cooling module 330 and the fourth cooling module 340 (the liquid cooling plate is selected to have a temperature reduction function). Effect of the liquid, the present invention is preferably tap water) for water cooling.

Specifically, a double-sided grid plate 116 is arranged between the main upper heating plate 113 and the main upper cooling plate 112 of the first cooling module 310, and a double-sided grid plate 116 is arranged between the main lower heating plate 114 and the main lower cooling plate 115. A double-sided grid plate 216 is arranged between the side grid plate 117 and the auxiliary upper heating plate 213 and the auxiliary upper cooling plate 212 of the second cooling module 320, and a double-sided grid plate 216 is arranged between the auxiliary lower heating plate 214 and the auxiliary lower cooling plate 215. A double-sided grid plate 217 is arranged between them.

As shown in Figure 3, the process of processing curved glass by the forming equipment of the present invention is: placing a single flat glass blank in a 3D curved surface forming mold in advance, and then placing the 3D curved surface forming mold with a single flat glass blank Put it on the feeding port platform 1, after the 3D curved surface forming mold is sensed by the induction device, the cylinder controls the push rod to push the 3D curved surface forming mold into the forming chamber 400, when the 3D curved surface forming mold is sent into the forming chamber 400 In advance, the 3D curved surface molding mold is heated in stages in the form of heat conduction through the first preheating device 210, the second preheating device 220, the third preheating device 230 and the fourth preheating device 240 arranged in the form of an assembly line. The single piece of flat glass blank is slowly preheated. After the 3D curved surface forming mold is preheated, it passes through the first hot pressing module 110, the second hot pressing module 120 and the third hot pressing module arranged in an assembly line in sequence. The module 130 is used to thermocompress a single piece of flat glass blank into a 3D curved glass product in stages (that is, a circular arc surface has appeared around the single piece of flat glass blank), when the 3D curved surface forming mold passes through the third After the heat-pressing module 130, the 3D cooling module is cooled in stages by heat conduction through the first cooling module 310, the second cooling module 320, the third cooling module 330 and the fourth cooling module 340 arranged in an assembly line. Curved surface forming mold, the temperature of the 3D curved surface forming mold is gradually reduced. After the 3D curved surface forming mold has been cooled for four times, the formed 3D curved surface glass product is auxiliary cooled through the liquid cooling channel 2 (auxiliary cooling device). The discharge port 3 completes the product discharge.

There is a 3D curved surface forming mold under each station, and the processing time of all stations is the same, which can be displayed through the display console 4 (which can display the temperature, pressure and processing time of each preheating device, pressing module and cooling module) and other parameters) to adjust and control, which is beneficial to process flat glass blanks in multiple 3D curved surface forming molds at the same time, and improve processing efficiency.

It should be noted that in practical applications, according to actual needs and requirements of different products, the number of molding modules, preheating devices, and cooling modules may not be the number of the present invention. In the present invention, only A molding module is also available, and other molding modules can be used as preheating devices or cooling modules, and the specific number is not limited.

At the same time, in the molding process, the molding chamber 400 is filled with nitrogen to prevent oxidation, and the molding cycle can be repeated when the temperature of the 3D curved surface molding mold 10 is high, and the single flat glass blank is placed in the 3D curved surface molding mold In the state (between the upper mold and the lower mold), the single-piece flat glass blank is formed into a curved state by applying pressure in a high-temperature environment (950 degrees).

To sum up, the utility model discloses a preheating device for forming curved glass for a mobile terminal. The preheating device includes a cylinder, an upper cooling plate, an upper heating device, a lower heating device, and a lower cooling plate. The cylinder is vertically arranged , the upper cooling plate, the upper heating device, the lower heating device and the lower cooling plate are all placed in a closed and ventilated molding chamber, the upper cooling plate is connected to the lower end of the cylinder, and the upper heating device is connected under the upper cooling plate, The lower heating device is connected on the lower cooling plate. The utility model evenly preheats the monolithic flat glass blank placed in the 3D curved surface forming mold by the preheating device, which facilitates the processing and molding of the single flat glass blank into 3D curved surface glass products, and improves the yield rate of curved surface glass.

It should be understood that the application of the present utility model is not limited to the above examples, and those skilled in the art can improve or change according to the above description, and all these improvements and changes should belong to the protection of the appended claims of the present utility model scope.

Claims (7)

1. a kind of preheating device of mobile terminal bend glass shaping, it is characterised in that the preheating device includes cylinder, upper cold But plate, upper electro-heat equipment, lower electro-heat equipment and lower coldplate, the vertical cylinder are set, upper coldplate, upper electro-heat equipment, under Electro-heat equipment and lower coldplate are placed in the forming room of a closing and ventilating, and upper coldplate is connected to the lower end of cylinder, Upper electro-heat equipment is connected under coldplate, and lower electro-heat equipment is connected on lower coldplate.

2. the preheating device of mobile terminal bend glass shaping according to claim 1, it is characterised in that the upper heating It is used to slow down 3D curved surface forming mould temperature by multiple between device and upper coldplate, between lower electro-heat equipment and lower coldplate The spacer of lifting speed is connected.

3. the preheating device of mobile terminal bend glass shaping according to claim 2, it is characterised in that the upper heating The temperature of device and lower electro-heat equipment heating 3D curved surface forming moulds is 650-950 degree.

4. the preheating device of mobile terminal bend glass shaping according to claim 1, it is characterised in that the upper heating Device is identical with lower electro-heat equipment size, and shape is rectangle, is correspondingly arranged up and down.

5. the preheating device of mobile terminal bend glass shaping according to claim 4, it is characterised in that the upper heating The top area that the floor space of device is more than and 3D curved surface forming moulds are in contact, the top area of the lower electro-heat equipment is more than and 3D The floor space that curved surface forming mould is in contact, 3D curved surface forming moulds are covered all for upper electro-heat equipment and lower electro-heat equipment Carry out pressurize heating.

6. the preheating device of mobile terminal bend glass shaping according to claim 1, it is characterised in that the pre- hot charging It is 4Kg-20Kg to put output pressure.

7. the preheating device of mobile terminal bend glass shaping according to claim 2, it is characterised in that the 3D curved surfaces The mould of glass includes mould and once mould on one, and the one side of lower mould towards upper mould is provided with a cavity, and upper mould is towards lower mould One side be provided with a boss, boss is adapted with cavity, in the state of upper mould and lower mould matched moulds, will be put into wherein single The flat glass of piece is hot pressed into 3D bend glasses, and the intermediate symmetry of the lower mould bottom surface is provided with the empty avoiding cavity of a closing.